BUG : corrected range issue when too small
BUG : corrected range issue when too small

- the rounding would be so that the min and max used (not displayed) would be egal for small values, so no possibility to have different values between them

juanprietob/ShapePopulationViewer,agirault/ShapePopulationViewer,laurapascal/ShapePopulationViewer,NIRALUser/ShapePopulationViewer,laurapascal/ShapePopulationViewer,juanprietob/ShapePopulationViewer,agirault/ShapePopulationViewer